mirror of
https://github.com/fofolee/uTools-Manuals.git
synced 2025-06-18 05:26:57 +08:00
167 lines
5.8 KiB
HTML
167 lines
5.8 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
|
|
<title>获取按指定宽度截断的字符串</title>
|
|
</head>
|
|
<body class="docs"><div id="layout">
|
|
<div id="layout-content"><div id="function.mb-strimwidth" class="refentry">
|
|
<div class="refnamediv">
|
|
<h1 class="refname">mb_strimwidth</h1>
|
|
<p class="verinfo">(PHP 4 >= 4.0.6, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">mb_strimwidth</span> — <span class="dc-title">获取按指定宽度截断的字符串</span></p>
|
|
|
|
</div>
|
|
|
|
<div class="refsect1 description" id="refsect1-function.mb-strimwidth-description">
|
|
<h3 class="title">说明</h3>
|
|
<div class="methodsynopsis dc-description">
|
|
<span class="methodname"><strong>mb_strimwidth</strong></span>
|
|
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$str</code></span>
|
|
, <span class="methodparam"><span class="type">int</span> <code class="parameter">$start</code></span>
|
|
, <span class="methodparam"><span class="type">int</span> <code class="parameter">$width</code></span>
|
|
[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$trimmarker</code><span class="initializer"> = ""</span></span>
|
|
[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$encoding</code><span class="initializer"> = mb_internal_encoding()</span></span>
|
|
]] ) : <span class="type">string</span></div>
|
|
|
|
<p class="para rdfs-comment">
|
|
按 <code class="parameter">width</code> 将<span class="type"><span class="type 字符串">字符串</span></span> <code class="parameter">str</code> 截短。
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 parameters" id="refsect1-function.mb-strimwidth-parameters">
|
|
<h3 class="title">参数</h3>
|
|
<p class="para">
|
|
<dl>
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">str</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para">
|
|
要截短的 <span class="type"><a href="language.types.string.html" class="type string">string</a></span>。
|
|
</p>
|
|
</dd>
|
|
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">start</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para">
|
|
开始位置的偏移。从这些字符数开始的截取字符串。（默认是 0 个字符）
|
|
如果 start 是负数，就是字符串结尾处的字符数。
|
|
</p>
|
|
</dd>
|
|
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">width</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para">
|
|
所需修剪的宽度。负数的宽度是从字符串结尾处统计的。
|
|
</p>
|
|
</dd>
|
|
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">trimmarker</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para">
|
|
当字符串被截短的时候，将此字符串添加到截短后的末尾。
|
|
</p>
|
|
</dd>
|
|
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">encoding</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para"><code class="parameter">encoding</code>
|
|
参数为字符编码。如果省略，则使用内部字符编码。</p>
|
|
</dd>
|
|
|
|
|
|
</dl>
|
|
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 returnvalues" id="refsect1-function.mb-strimwidth-returnvalues">
|
|
<h3 class="title">返回值</h3>
|
|
<p class="para">
|
|
截短后的 <span class="type"><a href="language.types.string.html" class="type string">string</a></span>。
|
|
如果设置了 <code class="parameter">trimmarker</code>，还将结尾处的字符替换为 <code class="parameter">trimmarker</code> ，并符合 <code class="parameter">width</code> 的宽度。
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 changelog" id="refsect1-function.mb-strimwidth-changelog">
|
|
<h3 class="title">更新日志</h3>
|
|
<table class="doctable informaltable">
|
|
|
|
<thead>
|
|
<tr>
|
|
<th>版本</th>
|
|
<th>说明</th>
|
|
</tr>
|
|
|
|
</thead>
|
|
|
|
<tbody class="tbody">
|
|
<tr>
|
|
<td>7.1.0</td>
|
|
<td>
|
|
支持负数的 <code class="parameter">start</code> 和 <code class="parameter">width</code>。
|
|
</td>
|
|
</tr>
|
|
|
|
</tbody>
|
|
|
|
</table>
|
|
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 examples" id="refsect1-function.mb-strimwidth-examples">
|
|
<h3 class="title">范例</h3>
|
|
<p class="para">
|
|
<div class="example" id="example-3192">
|
|
<p><strong>Example #1 <span class="function"><strong>mb_strimwidth()</strong></span> 例子</strong></p>
|
|
<div class="example-contents">
|
|
<div class="phpcode"><pre><span style="color: #000000">
|
|
<span style="color: #0000BB"><?php<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">mb_strimwidth</span><span style="color: #007700">(</span><span style="color: #DD0000">"Hello World"</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">10</span><span style="color: #007700">, </span><span style="color: #DD0000">"..."</span><span style="color: #007700">);<br /></span><span style="color: #FF8000">// 输出 Hello W...<br /></span><span style="color: #0000BB">?></span>
|
|
</span>
|
|
</pre></div>
|
|
</div>
|
|
|
|
</div>
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 seealso" id="refsect1-function.mb-strimwidth-seealso">
|
|
<h3 class="title">参见</h3>
|
|
<p class="para">
|
|
<ul class="simplelist">
|
|
<li class="member"><span class="function"><a href="mb_strwidth.html" class="function" rel="rdfs-seeAlso">mb_strwidth()</a> - 返回字符串的宽度</span></li>
|
|
<li class="member"><span class="function"><a href="mb_internal_encoding.html" class="function" rel="rdfs-seeAlso">mb_internal_encoding()</a> - 设置/获取内部字符编码</span></li>
|
|
</ul>
|
|
</p>
|
|
</div>
|
|
|
|
|
|
</div></div></div></body></html> |